155030512378 has 16 divisors (see below), whose sum is σ = 266555225664. Its totient is φ = 66244489920.

The previous prime is 155030512367. The next prime is 155030512391. The reversal of 155030512378 is 873215030551.

It is a super-2 number, since 2×155030512378² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155030512378.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16424968 + ... + 16434403.

It is an arithmetic number, because the mean of its divisors is an integer number (16659701604).

Almost surely, 2^155030512378 is an apocalyptic number.

155030512378 is a deficient number, since it is larger than the sum of its proper divisors (111524713286).

155030512378 is a wasteful number, since it uses less digits than its factorization.

155030512378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32859717.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 155030512378 in words is "one hundred fifty-five billion, thirty million, five hundred twelve thousand, three hundred seventy-eight".